author | hgs |
Wed, 20 Oct 2010 17:03:03 +0300 | |
changeset 81 | 676b6116ca93 |
parent 0 | 2e3d3ce01487 |
permissions | -rw-r--r-- |
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// Copyright (c) 1997-2010 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of "Eclipse Public License v1.0" |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// |
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#include <tz.h> |
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#include "tzrules.h" |
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#include <vtzrules.h> |
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#include <tzconverter.h> |
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#include "tzruleholder.h" |
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#include "tzchangenotifier.h" |
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#include "OstTraceDefinitions.h" |
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#ifdef OST_TRACE_COMPILER_IN_USE |
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#include "timezoneconverterTraces.h" |
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#endif |
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// |
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// CTzRuleHolder |
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// |
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CTzRuleHolder::CTzRuleHolder( RTz& aTzServer ) : |
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iTzServer (aTzServer) |
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{ |
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} |
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CTzRuleHolder::~CTzRuleHolder() |
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{ |
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delete iTzChangeNotifier; |
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delete iTzActualisedRules; |
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delete iTzRules; |
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} |
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CTzRuleHolder* CTzRuleHolder::NewL( RTz& aTzServer ) |
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{ |
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CTzRuleHolder* self = new(ELeave) CTzRuleHolder( aTzServer ); |
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CleanupStack::PushL( self ); |
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self->ConstructL(); |
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CleanupStack::Pop( self ); |
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return self; |
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} |
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void CTzRuleHolder::ConstructL() |
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{ |
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// Must be connected. |
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if (!iTzServer.Handle()) |
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{ |
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User::Leave( KErrNotReady ); |
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} |
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CTzId* tzId = iTzServer.GetTimeZoneIdL(); |
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SetCurrentTzId(tzId->TimeZoneNumericID()); |
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delete tzId; |
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iTzChangeNotifier = CTzChangeNotifier::NewL( *this ); |
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iTzChangeNotifier->StartObserving(); |
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} |
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/** |
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Clears the cache. |
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*/ |
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void CTzRuleHolder::ClearRules() |
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{ |
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delete iTzActualisedRules; |
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iTzActualisedRules = NULL; |
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delete iTzRules; |
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iTzRules = NULL; |
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iCurrentTzId = 0; |
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} |
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void CTzRuleHolder::DoConvertL(TTime& aTime, TTzTimeReference aTimerRef) |
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{ |
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OstTraceDefExt5( OST_TRACE_CATEGORY_DEBUG,TRACE_FLOW_PARAM, CTZRULEHOLDER_DOCONVERTL_ENTRY, "CTzRuleHolder::DoConvertL Entry: atime:Year=%d;Month=%d;Day=%d;Hour=%d;Min=%d", aTime.DateTime().Year(), aTime.DateTime().Month(), aTime.DateTime().Day(), aTime.DateTime().Hour(), aTime.DateTime().Minute()); |
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OstTraceDefExt2( OST_TRACE_CATEGORY_DEBUG,TRACE_FLOW_PARAM, CTZRULEHOLDER_DOCONVERTL_ENTRY_PARAM, "Parameters cont..;Sec=%d;aTimerRef=%u", aTime.DateTime().Second(), aTimerRef ); |
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// The change notifier may not have had a chance to run yet |
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// so check if it is ready to run now to force the update of the client side cache |
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iTzChangeNotifier->RunIfReadyL(); |
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if (!(iTzRules && iTzRules->RulesApply(aTime) ) ) |
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{ |
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if (!iTzRules) |
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{ |
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TTime startTime(TDateTime(0,EJanuary,0,0,0,0,0)); |
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TTime endTime(TDateTime(KMaxYear,EDecember,30,23,59,59,0)); |
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iTzRules = iTzServer.GetTimeZoneRulesL(startTime, endTime, aTimerRef); |
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} |
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} |
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// adjust for aTimerRef? |
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TDateTime dateTime = aTime.DateTime(); |
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TUint year = dateTime.Year(); |
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if (!(iTzActualisedRules |
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&& year >= iTzActualisedRules->StartYear() |
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&& year <= iTzActualisedRules->EndYear() ) ) |
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110 |
{ |
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// avoid over/under flow |
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TUint startYear = year; |
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TUint endYear = startYear; |
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if (startYear >= (KRuleCacheLowerLimit+1)) |
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{ |
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startYear -= (KRuleCacheLowerLimit+1); |
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} |
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if (endYear < (KMaxTUint - KRuleCacheUpperLimit)) |
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{ |
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endYear += KRuleCacheUpperLimit; |
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} |
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122 |
|
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CVTzActualisedRules* newRules = CVTzActualisedRules::NewL(startYear, endYear); |
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CleanupStack::PushL(newRules); |
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iTzRules->GetActualisedRulesL(*newRules); |
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CleanupStack::Pop(newRules); |
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|
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delete iTzActualisedRules; |
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iTzActualisedRules = newRules; |
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} |
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131 |
|
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User::LeaveIfError(iTzRules->ConvertTime(*iTzActualisedRules, aTime, aTimerRef)); |
81 | 133 |
OstTraceDef0(OST_TRACE_CATEGORY_DEBUG, TRACE_FLOW_PARAM, CTZRULEHOLDER_DOCONVERTL_EXIT, "CTzRuleHolder::DoConvertL Exit" ); |
134 |
||
0
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} |
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136 |
|
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/** |
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Handles notifications from the Time Zone Server |
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if the Time Zone Database Changes or the System Time Zone is Changed then |
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the cached rules are no longer valid. Discard them. |
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*/ |
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void CTzRuleHolder::NotifyTimeZoneChangeL(RTz::TTzChanges aChange) |
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{ |
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User::LeaveIfError(aChange); |
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145 |
|
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if (aChange == RTz::ETZDatabaseChanged || |
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aChange == RTz::ETZSystemTimeZoneChanged) |
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{ |
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ClearRules(); |
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CTzId* tzId = iTzServer.GetTimeZoneIdL(); |
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SetCurrentTzId(tzId->TimeZoneNumericID()); |
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delete tzId; |
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} |
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|
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// re-request notification |
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iTzChangeNotifier->StartObserving(); |
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|
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} |
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|
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// |
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// CTzChangeNotifier |
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// |
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CTzChangeNotifier::~CTzChangeNotifier() |
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{ |
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Cancel(); |
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} |
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|
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CTzChangeNotifier* CTzChangeNotifier::NewL( CTzRuleHolder& aRulesHolder ) |
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|
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{ |
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CTzChangeNotifier* self = new(ELeave) CTzChangeNotifier( aRulesHolder ); |
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CActiveScheduler::Add(self); |
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return self; |
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} |
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|
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/** |
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Starts observing for changes to the time zone from the the Time Zone Server. |
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@return KErrNotReady if already active, KErrNotReady if session not |
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open, otherwise KErrNone. |
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*/ |
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TInt CTzChangeNotifier::StartObserving() |
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{ |
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if (IsActive()) |
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{ |
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return KErrNotReady; |
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} |
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|
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iStatus = KRequestPending; |
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SetActive(); |
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iRulesHolder.Server().RegisterTzChangeNotifier(iStatus); |
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return KErrNone; |
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} |
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|
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/** |
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Stops Observing the Time Zone Server. |
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*/ |
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void CTzChangeNotifier::StopObserving() |
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{ |
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Cancel(); |
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} |
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201 |
|
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void CTzChangeNotifier::RunIfReadyL() |
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{ |
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if (IsActive() && iStatus != KRequestPending) |
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{ |
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RunL(); |
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Cancel(); |
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StartObserving(); |
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} |
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} |
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|
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void CTzChangeNotifier::RunL() |
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{ |
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iRulesHolder.NotifyTimeZoneChangeL( static_cast<RTz::TTzChanges>( |
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iStatus.Int()) ); |
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} |
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void CTzChangeNotifier::DoCancel() |
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{ |
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iRulesHolder.Server().CancelRequestForNotice(); |
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} |
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// |
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// CTzConverter |
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// |
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const RTz& CTzConverter::Server() const |
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{ |
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return iTzServer; |
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} |
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CTzConverter::CTzConverter(RTz& aTzServer) : iTzServer(aTzServer) |
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{ |
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} |
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void CTzConverter::ConstructL() |
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{ |
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// Caching is now done through RTz so enable its caching. This will |
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// do nothing if connected, but if unconnected, then this will leave |
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// with KErrNotReady. |
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iTzServer.StartCachingL(); |
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} |
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// Handles notifications from the Time Zone Server |
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// if the Time Zone Database Changes or the System Time Zone is Changed then |
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// the cached rules is no longer valid. discard it. |
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void CTzConverter::NotifyTimeZoneChangeL(RTz::TTzChanges /*aChange*/) |
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{ |
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// No longer does anything. This is done in RTz. |
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} |
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|
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/** |
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CTzConverter factory method. |
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|
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Provides client side caching for conversions in the local time zone. Caching |
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is done through RTz but enabled through this interface. When caching has been |
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enabled by this class and the RTz functions for local time zone conversion are |
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used, they too will use the cache instead of the server. Multiple CTzConverter's |
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can use the same RTz session. Each converter will be notified by the server if |
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the time zone changes, and the cache will be updated appropriately. |
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|
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|
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To disable caching in RTz, the session must be closed. Caching will be |
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re-enabled if a CTzConverter associated with the RTz is later used again |
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for local time zone conversions. |
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This will leave with KErrNotReady if the RTz passed in is not connected. |
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@param aTzServer Connection to the time zone server. |
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@return A pointer to the new CTzConverter object. The caller takes ownership. |
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*/ |
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EXPORT_C CTzConverter* CTzConverter::NewL(RTz& aTzServer) |
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{ |
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CTzConverter* self = new(ELeave) CTzConverter(aTzServer); |
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CleanupStack::PushL(self); |
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self->ConstructL(); |
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CleanupStack::Pop(self); |
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return self; |
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} |
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|
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/** |
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Destructor. |
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*/ |
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EXPORT_C CTzConverter::~CTzConverter() |
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{ |
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} |
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|
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|
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/** |
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Converts a time from UTC to local (wall-clock) time |
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for the current system time zone. |
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@param aTime On entry, contains the UTC time to be converted |
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and the converted value on exit. |
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@return KErrNone if successful, otherwise another system error code. |
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*/ |
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EXPORT_C TInt CTzConverter::ConvertToLocalTime(TTime& aTime) |
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{ |
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|
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|
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// Ensure that caching is enabled. It will be disabled if the TZ server |
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// has become disconnected since this object was created. |
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TRAPD( error, iTzServer.StartCachingL() ); |
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if (error == KErrNone) |
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{ |
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return iTzServer.ConvertToLocalTime( aTime ); |
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} |
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else |
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{ |
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return error; |
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} |
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} |
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|
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/** |
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Converts a time from UTC to the local (wall-clock) time |
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for the specified time zone. |
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|
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@param aTime On entry, contains the UTC time to be converted, |
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and the converted value on exit. |
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@param aZone Time zone ID. |
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@return KErrNone if successful, otherwise another system error code. |
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*/ |
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EXPORT_C TInt CTzConverter::ConvertToLocalTime(TTime& aTime, |
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const CTzId& aZone) |
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{ |
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return (iTzServer.ConvertToLocalTime(aTime, aZone)); |
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} |
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|
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/** |
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Converts a local (wall-clock) time for the current system time zone into UTC. |
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@param aTime On entry, contains the local time to be converted, |
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and the converted value on exit. |
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@return KErrNone if successful, otherwise another system error code. |
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*/ |
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EXPORT_C TInt CTzConverter::ConvertToUniversalTime(TTime& aTime) |
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{ |
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|
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|
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// Ensure that caching is enabled. It will be disabled if the TZ server |
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// has become disconnected since this object was created. |
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TRAPD( error, iTzServer.StartCachingL() ); |
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if (error == KErrNone) |
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{ |
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return iTzServer.ConvertToUniversalTime( aTime ); |
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} |
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else |
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{ |
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return error; |
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} |
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} |
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|
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/** |
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Converts a local (wall-clock) time for the specified time zone into UTC. |
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@param aTime On entry, contains the local time to be converted, |
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and the converted value on exit. |
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@param aZone The time zone ID. |
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@return KErrNone if successful, otherwise another system error code. |
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*/ |
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EXPORT_C TInt CTzConverter::ConvertToUniversalTime(TTime& aTime, |
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const CTzId& aZone) |
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{ |
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|
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return (iTzServer.ConvertToUniversalTime(aTime, aZone)); |
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} |
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|
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/** |
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Get the numerical ID of the current time zone. |
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@return The time zone ID. |
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*/ |
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EXPORT_C TUint16 CTzConverter::CurrentTzId() |
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{ |
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TUint16 tzId = iTzServer.CurrentCachedTzId(); |
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return tzId; |
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} |